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Morganza Spillway: Wikis


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The Morganza Spillway is a floodway used in connection with the Old River Control Structure and the Atchafalaya River located in east Central Louisiana. The use of the spillway would be used in case of a flood from the Mississippi River. It would ultimately divert water from the river into the Morganza Spillway and into the Atchafalaya Basin. It was used in 1973 to relieve pressure from the Old River Control Structure. Louisiana Highway 1 has a 4-mile bridge that travels over the spillway. The old 2-lane bridge is used by the United States Army Corps of Engineers.


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